A method for fabricating a fuse for a semiconductor device. The method including:
providing a substrate; forming a first dielectric layer on a top surface of said
substrate; forming a dielectric mandrel on a top surface of said first dielectric
layer; forming a second dielectric layer on top of said mandrel and a top surface
of said first dielectric layer forming contact openings down to said substrate
in said first and second dielectric layers on opposite sides of said mandrel, said
contacts spaced away from said mandrel and leaving portions of said second dielectric
layer between said mandrel and said contacts; removing said second dielectric layer
from over said mandrel between said contact openings to form a trough; and filling
said trough and contact openings with a conductor.